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/**
* This version is stamped on May 10, 2016
*
* Contact:
* Louis-Noel Pouchet <pouchet.ohio-state.edu>
* Tomofumi Yuki <tomofumi.yuki.fr>
*
* Web address: http://polybench.sourceforge.net
*/
/* adi.c: this file is part of PolyBench/C */
#include "../include/misc.h"
#ifndef SYNTHESIS
#include <stdio.h>
#endif
static
void init_array (int n, int u[ 20 + 0][20 + 0])
{
int i, j;
for (i = 0; i < n; i++)
for (j = 0; j < n; j++)
{
u[i][j] = divider((int)(i + n-j), n);
}
}
static
int print_array(int n, int u[ 20 + 0][20 + 0])
{
int i, j;
int res = 0;
for (i = 0; i < n; i++)
for (j = 0; j < n; j++) {
res ^= u[i][j];
}
#ifndef SYNTHESIS
printf("finished: %u\n", res);
#endif
return res;
}
static
void kernel_adi(int tsteps, int n,
int u[ 20 + 0][20 + 0],
int v[ 20 + 0][20 + 0],
int p[ 20 + 0][20 + 0],
int q[ 20 + 0][20 + 0])
{
int t, i, j;
int B1, B2;
int mul1, mul2;
int a, b, c, d, e, f;
B1 = 2;
B2 = 1;
mul1 = divider(B1 * n * n, tsteps);
mul2 = divider(B2 * n * n, tsteps);
a = -(sdivider(mul1,2));
b = 1+mul1;
c = a;
d = -(sdivider(mul2,2));
e = 1+mul2;
f = d;
int ZERO = 0;
for (t=1; t<=tsteps; t++) {
for (i=1; i<n-1; i++) {
v[ZERO][i] = 1;
p[i][ZERO] = 0;
q[i][ZERO] = v[ZERO][i];
for (j=1; j<n-1; j++) {
p[i][j] = -sdivider(c, (a*p[i][j-1]+b));
q[i][j] = -sdivider((-d*u[j][i-1]+(1+2*d)*u[j][i] - f*u[j][i+1]-a*q[i][j-1]),(a*p[i][j-1]+b));
}
v[n-1][i] = 1;
for (j=n-2; j>=1; j--) {
v[j][i] = p[i][j] * v[j+1][i] + q[i][j];
}
}
for (i=1; i<n-1; i++) {
u[i][ZERO] = 1;
p[i][ZERO] = 0;
q[i][ZERO] = u[i][ZERO];
for (j=1; j<n-1; j++) {
p[i][j] = -sdivider(f, (d*p[i][j-1]+e));
q[i][j] = sdivider((-a*v[i-1][j]+(1+2*a)*v[i][j] - c*v[i+1][j]-d*q[i][j-1]),(d*p[i][j-1]+e));
}
u[i][n-1] = 1;
for (j=n-2; j>=1; j--) {
u[i][j] = p[i][j] * u[i][j+1] + q[i][j];
}
}
}
}
int main()
{
int n = 20;
int tsteps = 20;
int u[20 + 0][20 + 0];
int v[20 + 0][20 + 0];
int p[20 + 0][20 + 0];
int q[20 + 0][20 + 0];
init_array (n, u);
kernel_adi (tsteps, n, u, v, p, q);
return print_array(n, u);
}
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